diff options
| author | Jia-Ju Bai <baijiaju1990@163.com> | 2017-05-31 04:56:56 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-13 02:48:08 +0200 |
| commit | 896f6966fc815abe71f85fb26f0193875df8a035 (patch) | |
| tree | 6c1c0027740f63c5346c360a974d3934474638e4 /drivers/scsi/megaraid/megaraid_mm.c | |
| parent | scsi: ufs: Tidy clocks list head usage (diff) | |
| download | linux-896f6966fc815abe71f85fb26f0193875df8a035.tar.xz linux-896f6966fc815abe71f85fb26f0193875df8a035.zip | |
scsi: megaraid: Fix a sleep-in-atomic bug
The driver may sleep under a spin lock, and the function call path is:
mraid_mm_attach_buf (acquire the lock by spin_lock_irqsave)
pci_pool_alloc(GFP_KERNEL) --> may sleep
To fix it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC".
[mkp: fixed whitespace]
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_mm.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c index 4cf9ed96414f..544d6f7e6138 100644 --- a/drivers/scsi/megaraid/megaraid_mm.c +++ b/drivers/scsi/megaraid/megaraid_mm.c @@ -574,7 +574,7 @@ mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen) kioc->pool_index = right_pool; kioc->free_buf = 1; - kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, + kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_ATOMIC, &kioc->buf_paddr); spin_unlock_irqrestore(&pool->lock, flags); |